EP0885830B1 - Procédé pour retenir le bout de fil dans un paquet de fil - Google Patents

Procédé pour retenir le bout de fil dans un paquet de fil Download PDF

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Publication number
EP0885830B1
EP0885830B1 EP97830294A EP97830294A EP0885830B1 EP 0885830 B1 EP0885830 B1 EP 0885830B1 EP 97830294 A EP97830294 A EP 97830294A EP 97830294 A EP97830294 A EP 97830294A EP 0885830 B1 EP0885830 B1 EP 0885830B1
Authority
EP
European Patent Office
Prior art keywords
reel
yarn
connection
predetermined length
eye
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97830294A
Other languages
German (de)
English (en)
Other versions
EP0885830A1 (fr
Inventor
Armando D'agnolo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Officine Meccaniche Riva Srl
Original Assignee
Officine Meccaniche Riva Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Officine Meccaniche Riva Srl filed Critical Officine Meccaniche Riva Srl
Priority to EP97830294A priority Critical patent/EP0885830B1/fr
Priority to DE69716043T priority patent/DE69716043D1/de
Priority to US09/099,167 priority patent/US5992790A/en
Publication of EP0885830A1 publication Critical patent/EP0885830A1/fr
Application granted granted Critical
Publication of EP0885830B1 publication Critical patent/EP0885830B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • B65H65/005—Securing end of yarn in the wound or completed package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method of finishing a reel of wound yarn with a tail end of yarn hanging from the reel.
  • the unwound lengths of yarn which are often quite long, may become wound around rotating parts of machinery, compromising its operation and, in any case, necessitating manual intervention by an operator to remove the lengths of yarn from the parts on which they are wound or entangled.
  • This problem is solved with the use of monitoring and possibly a manual removal operation carried out when the winding of a reel is completed and/or when it is removed from the respective winding frame.
  • JP-A-07 257 822 describes a yarn end handling method wherein a loop is formed with the tails of two yarns wound on a bobbin.
  • the technical problem upon which the present invention is based consists in. devising a method of finishing reels of wound yarn which overcomes the problems mentioned above with reference to the prior art.
  • the concept upon which the invention is based consists in associating the tail end of yarn of a reel with the last turn wound on the same reel so as to form a closed loop surrounding the reel.
  • the point of the yarn to which the eye is connected is preferably in the part of the predetermined length which is not rewound.
  • One of the advantages of the finishing method according to the invention is that it permits safe and true automation of the operations for removing reels from the respective winding frames.
  • this method prevents the free tail end from becoming caught at some point during any subsequent movement of the reel, causing unwinding of longer or shorter but sometimes very long lengths of yarn which may become caught in the machinery.
  • suitable cutting of the tail end of the yarn and of an eye formed thereby produces an easily identifiable indication of the presence of the tail end which frequently, particularly with some kinds of yarn, remains indistinct in the mass of wound yarn.
  • a reel of wound yarn with a predetermined axis X-X is generally indicated 1.
  • the reel 1 comprises a cop 2 around which the yarn is wound and a cylindrical surface 3.
  • the reel 1 also has a tail end 4 constituted by an end portion of yarn which is not wound and hangs from the reel 1, as shown in Figure 3.
  • the reel 1 is supported by means of centres 5 and 6 suitably fitted in the respective open ends of the cop 2 and projecting relative to the yarn wound in the reel 1.
  • the centres 5 and 6 are supported by respective support arms 5' and 6' which are movable to permit the necessary movement of the centres 5 and 6 towards or away from one another in order actually to grip the reel 1 between the centres 5 and 6.
  • the arms may also be movable to allow the reels to be gripped and lifted from the respective winding frame.
  • one of the two centres is driven by a motor 18 so that the reel can be rotated suitably both in the yarn-winding direction and in the unwinding direction.
  • the other centre 6 is fixed to the cop 2 and is mounted idly on the respective arm 6' so as to be rotated by the reel 1 during rotation.
  • a drive roller 7 bears against the cylindrical surface 3 of the reel 1 and is driven in order to impart to the reel a suitable rotation both in the yarn-winding direction and in the unwinding direction, as in the embodiment of Figure 1.
  • both of the centres 5 and 6 are fixed to the cop 2 and are mounted idly on the respective arms 5' and 6' so as to be rotated by the reel 1.
  • the reel 1 is advantageously associated with means 30 for detecting its angular position.
  • the detection means 30 comprise a detection disc 31 fixed for rotation with the idle centre 6.
  • the disc 31 is thus rotated by the motion of the reel 1 and its angular position is unequivocally related to that of the reel 1.
  • the disc 31 incorporates elements representative of the angular position of the reel, for example, metal plates 29 located at a predetermined angular spacing.
  • the detection means 30 also comprise one or more position sensors 32 which can detect the representative elements and are constituted, for example, by so-called proximity sensors, cooperating with the metal plates 29.
  • the representative elements and the corresponding position sensors 32 may also be of different kinds, for example, operating optically, magnetically or by mechanical interference.
  • the winding of the yarn on the reel 1 is advantageously concluded with a few turns, generally indicated 8, disposed close together and located on the cylindrical surface 3 of the reel 1.
  • the turns 8 extend in a plane substantially perpendicular to the axis of the reel 1 and are preferably positioned centrally on the cylindrical surface 3 of the reel 1.
  • Suction means 9 for the wound yarn comprising a suction opening 10 and a suction duct 11, act on the surface 3 of the reel 1 and, in particular, in the region of the turns 8.
  • the suction means 9 generate an air-flow which draws the yarn hanging from the reel 1 through the opening 10 into the suction duct 11.
  • the portion of yarn unwound from the reel 1 is thus kept extended with a predetermined tension along a predetermined axis defined by the air-flow.
  • the air-flow in the suction means 9 can be interrupted according to the requirements of the method according to the invention.
  • the opening 10 can also be moved forwards and backwards between an advanced position relative to the surface 3 of the reel 1, in which the yarn is drawn in, and a retracted position which permits operation on the portion of the tail end 4 which remains extended between the opening 10 and the reel 1.
  • the method according to the invention provides for the use of means 33 for connecting distinct portions or points of the yarn.
  • Connection or “joining” means any type of connection between yarns, such as knotting, heat-sealing in the case of synthetic fibres, gluing, the application of fastening means such as clips, ties, or the like and, in particular, interlacing or splicing.
  • Interlacing or "splicing” generally means a connection of ends of yarn formed by means of turbulence generated with compressed air which causes the fibres of the yarns to intermingle. This connection is generally used in automatic reeling or for joining head and tail ends of reels.
  • Figures 1, 2, 5 and 11 show the splicing or interlacing connection means 33 comprising a connection head movable between a rest position and an operative position in which the connection head is inserted between the reel 1 and the opening 10 in order to connect the yarns.
  • Figure 3 shows the starting position of the reel 1 located with the surface 3 facing the opening 10 of the suction means 9 and with the tail end 4 hanging.
  • the length of the tail end 4 at this stage is indeterminate.
  • the end 4 and the opening 10 are disposed on opposite sides of the reel 1. This representation is not limiting of the definition of the method.
  • the opening 10 is moved towards the central turns 8 in a centred position relative to the surface 3 of the reel 1.
  • the reel 1 is rotated for a few turns so that the tail end 4 is wound onto the reel 1.
  • the reel 1 is then unwound ( Figure 4) until a predetermined length 12 of yarn is unwound, the length 12 comprising the tail end 4 and being long enough to enable the subsequent steps to be carried out, as will become clearer from the following description.
  • the length 12 is obtained by imparting a suitable rotation to the reel 1 in the yarn-unwinding direction by means of the motor 18 ( Figure 1) or the drive roller 7 ( Figure 2), according to the embodiment considered.
  • the air-flow generated by the suction means 9 in the advanced position ( Figure 4) enables the length 12 of yarn to be kept extended with a predetermined tension both between the reel 1 and the opening 10 and in the downstream portion.
  • the method then comprises a step in which an intermediate portion of the length 12 is folded onto itself so as to form an eye 13 closed by a first connection 20, in the sense defined above, of a first point 14 of the length 12 of yarn and a second point 15 closer to the reel 1 ( Figure 5).
  • a point 16 of the yarn which is between the two points 14 and 15 and is to constitute the end of the eye 13 is gripped and pulled to a position removed from the air-flow generated by the suction means ( Figure 5).
  • the length 12 of yarn thus forms a loop.
  • the gripping is achieved by a first arm 34 which, by pivoting in accordance with a pre-arranged sequence, intercepts the length 12 of yarn at the point 16 in order to pull it to the removed position.
  • the reel 1 is kept stationary in a predetermined position detected by the detection means 30, whilst the opening is brought to the retracted position to allow the first arm 34 to operate without interfering with it.
  • a second arm 35 then pivots so as to intercept the first point 14 of the yarn and to superimpose it on the second point 15 which, as stated, is close to the cylindrical surface 3 of the reel 1.
  • the loop formed between the points 14 and 15 of the yarn is consequently closed onto itself, forming the eye 13.
  • connection head 33 is then brought to the operative position where it forms the first connection 20 of the points 14 and 15 by splicing of the fibres which make up the yarn ( Figure 6).
  • the reel 1 is then rotated in the yarn-winding direction for a finite number of revolutions, preferably one revolution, so as to wind the first connection 20 and the eye 13 (Figure 7) around the reel.
  • the reel 1 With the control of the detection means 30, the reel 1 is repositioned in a manner such that the first connection 20 and the eye 13 are disposed adjacent the opening 10 ( Figure 8).
  • This rotation forms, around the reel 1, at least one rewound turn formed by the yarn of the length 12 and including both the first connection 20 and the eye 13.
  • the opening 10 is brought back to the advanced position relative to the surface 3 of the reel 1.
  • the eye 13 is thus drawn in by the suction means 9 until it is disposed adjacent the length 12 of yarn which has not been rewound and is still drawn in ( Figure 8).
  • the reel 1 may be rotated backwards and forwards about the stopping position.
  • connection head is brought to the operative position in order for the eye 13 to be connected, preferably at the point 20, to a still unwound point of the predetermined length 12 of yarn so as to form a second connection 36 close to the surface 3 of the reel 1.
  • the connection takes place by interlacing or splicing in the sense defined above.
  • the eye 13 may be connected to a different turn of the reel 1 and, in particular, to a rewound turn comprising a second eye formed by means of a further connection of separate points of the predetermined length 12.
  • the method according to the invention then comprises the step of cutting the eye 13 and the length 12 of yarn which has not been rewound, both of which are kept extended by the air-flow, the cutting taking place close to the second connection 36 and, in particular, downstream thereof ( Figure 10).
  • the second connection 36 constitutes an indication 21 of the presence of the end of the yarn on the cylindrical surface 3 of the reel 1.
  • the indication 21 is formed by a tuft of three cut ends of yarn ( Figure 11).
  • the reel 1 thus finished is ready to be stored or sent for subsequent processing.
  • the length of the length 12 depends on the number of revolutions in the winding direction imparted to the reel 1 once the eye 13 has been formed, on the travel of the first arm 34 which pulls the end 16 of the eye 13, and on the safety margin allowed.
  • reels may be cylindrical, tapered, conical, etc.
  • the method according to the invention is preferably used when the removal of the wound reels is carried out on robots which pick up the reels discharged from their positions in order to deposit them on carriages or in checking and packaging stations as, for example, in textile machines, or where removal takes place by means of automatic carriages as in so-called "open end" reeling machines or automatic spooling machines which serve a large number of winding stations.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Winding Filamentary Materials (AREA)

Claims (25)

  1. Procédé de finition automatique d'une bobine (1) de fil enroulé ayant une extrémité de queue libre (4), comportant l'étape consistant à :
    dérouler une longueur prédéterminée (12) de fil de la bobine (1), incluant l'extrémité de queue (4), et caractérisé en ce qu'il comporte en outre les étapes consistant à :
    plier une partie de la longueur prédéterminée (12) sur elle-même de manière à former un oeillet (13) par l'intermédiaire d'une première liaison (20) de points (14, 15) de ladite longueur prédéterminée,
    mettre en rotation la bobine (1) afin de former au moins une spire de fil réenroulée incluant ladite première liaison (20) de points (14, 15), et
    relier l'oeillet (13) faisant saillie à partir de la spire réenroulée à un point de ladite longueur prédéterminée (12) de fil de manière à former une seconde liaison (36).
  2. Procédé selon la revendication 1, comportant l'étape consistant à couper la longueur (12) de fil en aval de la seconde liaison (36).
  3. Procédé selon la revendication 1 ou 2, comportant l'étape consistant à couper l'oeillet (13) pour former une indication (21) de la présence de l'extrémité de fil sur la surface cylindrique (3) de la bobine (1).
  4. Procédé selon la revendication 1, dans lequel le point au niveau duquel l'oeillet (13) est relié est disposé dans la partie de longueur prédéterminée (12) qui n'est pas réenroulée.
  5. Procédé selon la revendication 1, dans lequel la partie de ladite longueur prédéterminée (12) à plier sur elle-même est espacée de l'extrémité de queue (4).
  6. Procédé selon la revendication 5, dans lequel la partie de ladite longueur prédéterminée (12) à plier sur elle-même est la partie qui est à proximité de la surface cylindrique (3) de la bobine (1).
  7. Procédé selon la revendication 1, dans lequel la seconde liaison (36) est formée adjacente à la première liaison (20).
  8. Procédé selon la revendication 1, dans lequel la longueur prédéterminée (12) de fil est maintenue étendue par une tension prédéterminée le long d'un axe prédéterminé pendant la formation de l'oeillet (13).
  9. Procédé selon la revendication 8, dans lequel la longueur prédéterminée (12) de fil est pliée en
    saisissant un point (16) du fil qui est disposé entre les points (14, 15) et qui est destiné à devenir l'extrémité de l'oeillet (13), et le tirer loin de l'axe prédéterminé de manière à former une boucle, et
    superposer un premier (14) des points (14, 15) sur le second (15) des points (14, 15).
  10. Procédé selon la revendication 9, dans lequel le premier point (14) du fil est plus loin en aval que le second point (15), par rapport à la bobine (1).
  11. Procédé selon la revendication 1, dans lequel la longueur prédéterminée (12) de fil est maintenue étendue par une tension prédéterminée par aspiration dans un écoulement d'air.
  12. Procédé selon la revendication 11, dans lequel les parties de fil découpé (12, 13) sont éloignées par l'écoulement d'air.
  13. Procédé selon la revendication 1, dans lequel la rotation de la bobine (1) est imposée par l'intermédiaire d'un axe d'entraínement (5) constitué de deux axes (5, 6) supportant une canette (2) de la bobine (1).
  14. Procédé selon la revendication 1, dans lequel la rotation de la bobine (1) est imposée par l'intermédiaire d'un rouleau d'entraínement (7) agissant par friction sur la surface cylindrique (3) de la bobine (1).
  15. Procédé selon la revendication 1, dans lequel la première (20) ou la seconde (36) liaison est formée par entrelacement ou épissage des fibres constituant le fil.
  16. Procédé selon la revendication 1 dans lequel la première liaison (20) ou la seconde liaison (36) est formée par scellage à chaud.
  17. Procédé selon la revendication 1, dans lequel la première liaison (20) ou la seconde liaison (36) est formée par collage.
  18. Procédé selon la revendication 1, dans lequel la première liaison (20) ou la seconde liaison (36) est formée par nouage.
  19. Procédé selon la revendication 1, dans lequel la première liaison (20) ou la seconde liaison (36) est formée par des moyens de fixation.
  20. Procédé selon la revendication 1, dans lequel l'enroulement du fil sur la bobine (1) est conclu par des spires d'extrémité (8) disposées à proximité l'une de l'autre et positionnées sur la surface cylindrique (3) de la bobine (1).
  21. Procédé selon la revendication 20, dans lequel les spires d'extrémité (8) s'étendent dans un plan sensiblement perpendiculaire à l'axe de la bobine (1).
  22. Procédé selon la revendication 21, dans lequel les spires d'extrémité (8) sont positionnées centralement sur la surface cylindrique (30) de la bobine (1).
  23. Procédé selon la revendication 1, dans lequel des moyens de détection de position angulaire (30) sont associés à la bobine (1).
  24. Procédé selon la revendication 23, dans lequel les moyens de détection (30) comportent un disque de détection (31) associé à un axe (6) de manière à être fixé pour tourner avec l'axe (6) et représentatif de la rotation de celui-ci.
  25. Procédé selon la revendication 23, dans lequel le disque (31) comporte des éléments représentatifs (29) de la position angulaire de la bobine (1), les moyens de détection (30) comportant aussi un ou plusieurs détecteurs de position (32) qui peuvent détecter les éléments représentatifs.
EP97830294A 1997-06-20 1997-06-20 Procédé pour retenir le bout de fil dans un paquet de fil Expired - Lifetime EP0885830B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97830294A EP0885830B1 (fr) 1997-06-20 1997-06-20 Procédé pour retenir le bout de fil dans un paquet de fil
DE69716043T DE69716043D1 (de) 1997-06-20 1997-06-20 Verfahren zum Festhalten des Fadenendes in einem Garnwickel
US09/099,167 US5992790A (en) 1997-06-20 1998-06-18 Method of finishing reels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP97830294A EP0885830B1 (fr) 1997-06-20 1997-06-20 Procédé pour retenir le bout de fil dans un paquet de fil
US09/099,167 US5992790A (en) 1997-06-20 1998-06-18 Method of finishing reels

Publications (2)

Publication Number Publication Date
EP0885830A1 EP0885830A1 (fr) 1998-12-23
EP0885830B1 true EP0885830B1 (fr) 2002-10-02

Family

ID=26148150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830294A Expired - Lifetime EP0885830B1 (fr) 1997-06-20 1997-06-20 Procédé pour retenir le bout de fil dans un paquet de fil

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US (1) US5992790A (fr)
EP (1) EP0885830B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2833587B1 (fr) * 2001-12-14 2004-02-13 Superba Sa Procede et dispositif de nouage d'un fil sur une bobine
US6964437B2 (en) 2001-12-14 2005-11-15 Superba (Societa Anonyme) Process and device for knotting a yarn on a spool
ITFI20010241A1 (it) * 2001-12-18 2003-06-18 Gualchierani Textile Automatio Dispositivo e metodo per fissare ad una bobina di filato le spire terminali del filato
US7195194B2 (en) * 2002-07-08 2007-03-27 Superba S.A.S. Process for automatic removal of packages
CA2492976C (fr) 2002-09-05 2011-11-01 Galderma Research & Development, S.N.C. Solution destinee a une application ungueale et peri-ungueale
ITMI20031609A1 (it) * 2003-08-05 2005-02-06 Ohg Riva S R L Metodo, apparato e dispositivo interlacciatore per la rifinitura automatica di una bobina di filo avvolto avente un capo terminale
AT501130B1 (de) * 2004-08-17 2010-04-15 Schweninger Textil Gmbh Garnwickel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187936C (fr) *
DE192562C (fr) *
US3117738A (en) * 1960-05-21 1964-01-14 Reiners Walter Device for fixing the thread ends on yarn coils
DE1278309B (de) * 1960-11-15 1968-09-19 Reiners Walter Dr Ing Vorrichtung zum Festlegen der Fadenenden an Textilspulen
EP0559041B1 (fr) * 1992-03-03 1995-08-09 Teijin Limited Procédé et dispositif pour traiter le bout de fil d'une bobine
JP3353350B2 (ja) * 1992-10-08 2002-12-03 東レ株式会社 パッケージの糸端処理方法
JP3505768B2 (ja) * 1994-03-18 2004-03-15 東レ株式会社 巻糸体の糸端処理方法及び糸端処理された巻糸体
JP3413946B2 (ja) * 1994-04-25 2003-06-09 東レ株式会社 パッケージの糸端処理装置および糸条パッケージ

Also Published As

Publication number Publication date
US5992790A (en) 1999-11-30
EP0885830A1 (fr) 1998-12-23

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